/**
 * Shows a preview form of a given json schema and ui schema in a new panel inside the editor
 * @param {any} editorInstance the instance of the editor
 * @param {string} path the path to the schema or ui-schema file
 * @param {string} extensionPath the path to the extension directory
 */
export declare const showPreview: (editorInstance: any, firstSchemafileUri: any, extensionPath: string) => Promise<void>;